Door closing & graphics updates (v7 / demo v14)

[h3]Door quick-close (door control version 4)[/h3] [list] [*]Activated by pressing the local interaction button ([Space] / 🎮 [A] by default) together with moving in the direction that the character should stay after the door is closed. [*]Only available while the door is fully opened (at least nearly 90 degrees), this state is most easily reached by quick-opening the door. [*]As before, can be disabled by setting "Options/Control/Door control version" to version 3 or earlier. [/list] [h3]Various[/h3] [list] [*]Added the UI background blur effect (existing users need to opt in by enabling "Options/Graphics/Blurred scene UI backgrounds") [*]Added adaptive exposure - increasing brightness if the image is too dark (can be disabled in "Options/Display/Adaptive exposure") [*]Added increased camera vignette when zooming in (similar to how real cameras work) [*]Fixed incomplete saving of player character’s door use state [/list]